#1F4BA9#1F4BA9

#1F4BA9 is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.2% C 0.159 H 262.8°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#1F4BA9
RGB	rgb(31, 75, 169)
HSL	hsl(221, 69%, 39%)
HSV	hsv(221, 82%, 66%)
CMYK	cmyk(81.7%, 55.6%, 0%, 33.7%)
CIE-LAB	lab(34.37, 20.81, -54.67)
CIE-LCH	lch(34.37, 58.49, 290.84°)
OKLab	oklab(44.15% -0.02 -0.1578)
OKLCH	oklch(44.15% 0.159 262.8)
XYZ	xyz(10.2400, 8.1868, 38.5689)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F4BA9 #A97D1F

analogous

#1F90A9 #1F4BA9 #381FA9

triadic

#1F4BA9 #A91F4B #4BA91F

tetradic

#1F4BA9 #A91F90 #A97D1F #1FA938

square

#1F4BA9 #A91F90 #A97D1F #1FA938

split-complementary

#1F4BA9 #A9381F #90A91F

monochromatic

#0C1D42 #163475 #1F4BA9 #2D63D8 #608AE2

Accessibility & contrast

On white

7.96

#1F4BA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#1F4BA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F4BA9

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F4BA9	#FFFFFF	#000000	##FFFFFF
##1F4BA9	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AC

Deuteranopia (green-blind)

#004BA7

Tritanopia (blue-blind)

#006272

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f4ba9;
/* rgb */ color: rgb(31, 75, 169);
/* oklch */ color: oklch(44.2% 0.159 262.8);

Tailwind

colors: {
  custom: {
    50: '#727cc3',
    500: '#1f4ba9',
    950: '#000000',
  },
}

SCSS

$custom: #1f4ba9;
$custom-light: #727cc3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f4ba9",
  "rgb": {
    "r": 31,
    "g": 75,
    "b": 169
  },
  "hsl": {
    "h": 220.87,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.44154,
    "c": 0.15905,
    "h": 262.8
  },
  "luminance": 0.08188
}

Semantic roles & 50–950 ramp

primary

#1F4BA9

secondary

#C7A55D

accent

#B43CEC

background

#F7F7FC

surface

#EEEEF8

border

#C9C9D1

text

#090913

muted

#7B7B82

Preview Lab

Preview with #1F4BA9

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →